CN212790492U

CN212790492U - Candle type low-pressure-drop particle fixed bed reactor

Info

Publication number: CN212790492U
Application number: CN202020708383.9U
Authority: CN
Inventors: 余剑; 杨关生
Original assignee: Nanjing Chibo Environmental Protection Technology Co ltd
Current assignee: Nanjing Chibo Environmental Protection Technology Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-03-26
Anticipated expiration: 2030-04-30

Abstract

The utility model provides a candle type low-pressure drop particle fixed bed reactor, which comprises a secondary reactor, wherein a flower plate is arranged in the secondary reactor, and one or more primary microminiature catalytic adsorption reactor modules are fixedly, hermetically and jointly connected with the flower plate; and the catalytic adsorption material is filled in the first-stage microminiature catalytic adsorption reactor module. The utility model discloses a low pressure drop, the particle that can change on line adsorbs catalytic reactor structure loads granule or the catalyst of other forms in the intermediate layer, prepares into the chimney filter formula module that has certain wall thickness. On the premise of the same airspeed and gas handling capacity, the catalyst is stacked and divided into a plurality of penetrating type microminiature reaction modules in a single reactor, and finally the matching of pressure drop and reaction efficiency in the large-gas-volume treatment process is realized, so that the space utilization rate is improved; and by utilizing the bin separation principle, the catalytic adsorbent module of each chamber can be replaced on line or subjected to regeneration treatment, so that the continuity and stability of production and operation are realized.

Description

Candle type low-pressure-drop particle fixed bed reactor

Technical Field

The utility model belongs to the technical field of fixed bed reactor, a candle formula low pressure drop granule fixed bed reactor is adopted in the design.

Background

Fixed bed reactors, also known as packed bed reactors, are reactors packed with solid catalysts, adsorbents, or solid reactants to achieve a heterogeneous reaction process. The solid is usually granular, the particle size is about 2-15 mm, and the solid is stacked into a bed layer with a certain height. The bed is stationary and the fluid is passed through the bed for reaction. It differs from fluidized bed reactors and moving bed reactors in that the solid particles are in a quiescent state. The fixed bed reactor is mainly used for realizing gas-solid phase catalytic reaction, such as an ammonia synthesis tower, a sulfur dioxide contact oxidizer, a hydrocarbon steam converter and the like. When the catalyst is used for gas-solid phase or liquid-solid phase non-catalytic reaction, the bed layer is filled with solid reactants.

The existing fixed bed reactor is usually fixedly filled with granular catalyst or adsorbent, and can adsorb or catalytically convert substances in gas or liquid, and the catalyst cannot be replaced in the operation process. Especially for bulk gas treatment, this packing not only results in large pressure drop throughout the process, but also makes on-line replacement of the spent adsorbent catalyst product difficult.

Aiming at the problems that the catalytic adsorption material is easy to be saturated and poisoned and ineffective in the using process and the pressure drop is large in the large-air-volume gas treatment process, the catalytic adsorption material is often filled in a plurality of reaction towers in the industry at present, and the continuous application function of the catalytic adsorption material is realized by repeated single-tower reaction regeneration. However, the method can not solve the problem of low pressure drop, occupies large space, has complicated structural operation, has difficulty in replacing the catalytic adsorption material on line and is greatly limited in application.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a candle type low-pressure drop particle fixed bed reactor. The utility model discloses a low pressure drop, the particle adsorption catalytic reactor structure that can change on line, according to the shape of tubular/bag formula filter material, load the catalyst of granule or other forms in the intermediate layer, prepare into the chimney filter formula module that has certain wall thickness. On the premise of the same airspeed and gas handling capacity, the catalyst is stacked and divided into a plurality of penetrating type microminiature reaction modules in a single reactor, and finally the matching of pressure drop and reaction efficiency in the large-gas-volume treatment process is realized, so that the space utilization rate is improved; and by utilizing the bin separation principle, the catalytic adsorbent module of each chamber can be replaced on line or subjected to regeneration treatment, so that the continuity and stability of production and operation are realized.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a candle type low-pressure-drop particle fixed bed reactor comprises a secondary reactor, wherein a flower plate is arranged in the secondary reactor, and one or more primary microminiature catalytic adsorption reactor modules are in sealed connection with the flower plate; and the catalytic adsorption material is filled in the first-stage microminiature catalytic adsorption reactor module.

Gas or liquid to be treated enters through an inlet of the secondary reactor, passes through the catalytic adsorption material in one or more primary microminiature catalytic adsorption reactor modules, is collected from the inside of the catalytic adsorption material and then is connected with an outlet of the secondary reactor, and the catalysis, adsorption and purification of the gas are realized.

Preferably, the first-stage microminiature catalytic adsorption reactor module is fixedly, hermetically and fixedly connected with the flower plate through a flange.

Preferably, the candle-type low-pressure-drop particle fixed bed reactor is a parallel system comprising a plurality of the secondary reactors.

Preferably, the catalytic adsorbent material is in the form of particles or fibers.

Preferably, the catalytic adsorption material is placed in the first-stage microminiature catalytic adsorption reactor module through uniform filling or a fixed mode.

Preferably, the first-stage microminiature catalytic adsorption reactor module is a tubular reactor.

The utility model discloses carry out the filter tube formula structure with catalytic adsorption material (graininess or fibrous) and fill the back, form single one-level microminiature catalytic adsorption reactor module, carry out the hoist and mount of miniaturity module in candle formula reactor, form the secondary reactor, carry out parallelly connected back with a plurality of secondary reactors, form the bulk gas processing unit of integrated form. The utility model loads a large amount of catalytic adsorption materials into a plurality of miniature modules, thereby simplifying the replacement of the catalytic adsorption materials; the contact area of gas is increased on the limited floor space through the structure of the candle type reactor, and the gas contact surface speed is greatly reduced under the condition of the same airspeed, so that the pressure drop of the system is reduced; and through the parallel connection of a plurality of candle reactors, the regeneration of a single reactor or the replacement of a miniature module in the reactor can be carried out on the premise of not shutting down the system. Thereby achieving the effects of low pressure drop and reproducibility of the system.

Drawings

FIG. 1 is a schematic view of a parallel system of a plurality of secondary reactors of a candle-type low-pressure-drop particle fixed bed reactor of the present invention;

FIG. 2 is a schematic diagram of a two-stage reactor according to the present invention;

FIG. 3 is a schematic structural diagram of an one-level micro-miniature catalytic adsorption reactor module of the present invention.

Reference numerals:

1-pattern plate; 2-first-stage microminiature catalytic adsorption reactor module; 3-an inlet; 4-outlet.

Detailed Description

The technical solution of the present invention is further described below by referring to the drawings and specific embodiments, and the following embodiments are only used to more clearly illustrate the technical solution of the present invention, and the protection scope of the present invention is not limited thereby.

A candle-type low-pressure-drop particle fixed bed reactor comprises a plurality of secondary reactors connected in parallel. The granular catalytic adsorption material is uniformly filled in the primary micro catalytic adsorption reactor module, a flower plate 1 is arranged in the secondary reactor, and a plurality of primary micro catalytic adsorption reactor modules 2 are fixedly, hermetically and connected with the flower plate;

gas to be treated enters through an inlet 3 of the secondary reactor, passes through the catalytic adsorption material in one or more primary microminiature catalytic adsorption reactor modules, is collected from the inside of the catalytic adsorption material and then is connected with an outlet 4 of the secondary reactor, and the catalysis, adsorption and purification of the gas are realized.

The first-stage microminiature catalytic adsorption reactor module is a tubular reactor.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. A candle low pressure drop particle fixed bed reactor, comprising a secondary reactor, characterized in that: a pattern plate is arranged in the secondary reactor, and one or more primary microminiature catalytic adsorption reactor modules are hermetically connected with the pattern plate; and the catalytic adsorption material is filled in the first-stage microminiature catalytic adsorption reactor module.

2. The candle low pressure drop particle fixed bed reactor as in claim 1, wherein the primary microminiature catalytic adsorption reactor module is fixedly and sealingly engaged with the faceplate by a flange.

3. The candle low pressure drop particle fixed bed reactor as in claim 1, wherein the candle low pressure drop particle fixed bed reactor is a parallel system comprising a plurality of the secondary reactors.

4. A candle low pressure drop particulate fixed bed reactor as in any one of claims 1-3, wherein the catalytic adsorbent material is in the form of particles or fibers.

5. The candle low-pressure drop particle fixed bed reactor as in claim 4, wherein the catalytic adsorbent material is uniformly packed or fixed in the first-stage micro catalytic adsorbent reactor module.

6. The candle low pressure drop particle fixed bed reactor as in claim 1, wherein the primary microminiature catalytic adsorption reactor module is a tubular reactor.